CN204649597U - A kind of device causing experiment for water tree - Google Patents
A kind of device causing experiment for water tree Download PDFInfo
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- CN204649597U CN204649597U CN201520420016.8U CN201520420016U CN204649597U CN 204649597 U CN204649597 U CN 204649597U CN 201520420016 U CN201520420016 U CN 201520420016U CN 204649597 U CN204649597 U CN 204649597U
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Abstract
Cause a device for experiment for water tree, belong to cable insulation material water tree resistant property studying technological domain.The utility model is complicated in order to solve liquid drugs injection electrode fabrication process, and water tree priming site is few, causes chance of success low, and workload is large, the problem that the cycle is long.Sheet specimens of the present utility model is placed in the lower port place of PP pipe, filling chlorinated sodium water solution in the container made, cup/lid mounts cover on PP pipe, high-voltage connection is introduced by cup/lid, the lower end of high-voltage connection is placed in sodium-chloride water solution, and the upper end of high-voltage connection is connected to high-voltage power supply, and the upper surface of sheet specimens has cut knife-like gap, be full of sodium-chloride water solution in knife-like gap and form water cutter electrode, sheet specimens lower surface is provided with ground-electrode.The utility model is used for water tree and causes experiment.
Description
Technical field
The utility model relates to a kind of XLPE insulating material water tree senile experiment device, belongs to cable XLPE insulating material water tree resistant property studying technological domain.
Background technology
Under humidity and electric stress synergy, the insulation defect place of mesolow crosslinked polyethylene (XLPE) insulated power cable can form some dendritic structures and destroy, i.e. " water tree ".The initiation of water tree and growth substantially reduce the serviceable life of power cable, produce potential threat to the power supply safety of electrical network.Therefore, the quality that the XLPE cable insulating material of the resistance to water tree of Developing Application improves cable insulation has important economic worth.Many researchists find to add PEG, EEA, SEBS, Nano-meter SiO_2 in XLPE
2, nano-MgO and D-sorbite etc. can obviously suppress XLPE to insulate in the initiation of water tree and growth.In actual motion, the water tree of XLPE insulating material is aging be one slowly and the random process occurred, generally take several years even more than ten years, bring certain difficulty to the research of the water tree resistant property of insulating material.Researchist generally adopts and accelerates water tree senile experiment to simulate initiation and the growth of actual water tree, to shorten search time, improve Efficiency, therefore select the water tree resistant property of a kind of experimental technique accurately and rapidly to research cable XLPE insulating material to have important theory and realistic meaning, the research and apply of XLPE insulated cable and material thereof can be promoted.
In the cable, the region mainly high spot of semi-conductive layer and insulation course surface of contact and defect (pore, the impurity etc.) place of insulation course inside that water tree occurs, these local electric field intensity are higher, usually become the initiation point of water tree.Therefore existing general water tree culture experiment adopts liquid drugs injection electrode to simulate these defects, to accelerate initiation and the growth of water tree, evaluates the water tree resistant property of different XLPE insulating material.But liquid drugs injection electrode fabrication process is complicated, in a sample, water tree priming site is few, and it is low that water tree causes chance of success, and experimental work amount is large, and experimental period is long.Therefore, experimental provision that is a kind of fast in the urgent need to utility model in real work, accurately inspection XLPE insulating material water tree resistant property.
Utility model content
Give hereinafter about brief overview of the present utility model, to provide about the basic comprehension in some of the present utility model.Should be appreciated that this general introduction is not summarize about exhaustive of the present utility model.It is not that intention determines key of the present utility model or pith, neither intended limitation scope of the present utility model.Its object is only provide some concept in simplified form, in this, as the preorder in greater detail discussed after a while.
Given this, according to an aspect of the present utility model, provide the device that a kind of water tree causes experiment, the simulation of liquid drugs injection electrode is adopted at least to solve existing water tree culture experiment, liquid drugs injection electrode fabrication process is complicated, and in a sample, water tree priming site is few, and it is low that water tree causes chance of success, experimental work amount is large, the problem that experimental period is long.
A kind of device causing experiment for water tree of the utility model, comprise PP pipe, cup/lid, high-voltage connection, sheet specimens, water cutter electrode, ground-electrode, high-voltage power supply, sheet specimens is placed in the lower port place of PP pipe, container is made with PP pipe, filling chlorinated sodium water solution in container, cup/lid mounts cover on PP pipe, high-voltage connection is introduced by cup/lid, the lower end of high-voltage connection is placed in sodium-chloride water solution, the upper end of high-voltage connection is connected to high-voltage power supply, the upper surface of sheet specimens has cut knife-like gap, be full of sodium-chloride water solution in knife-like gap and form water cutter electrode, sheet specimens lower surface is provided with ground-electrode, the thickness of sheet specimens is the twice of the distance between the knife edge in knife-like gap and sheet specimens lower surface.
Further: the distance between the knife edge in described knife-like gap and sheet specimens lower surface is 1mm-4mm.
Further: the volumetric molar concentration of described sodium-chloride water solution is 1mM-3M.
The effect that the utility model reaches is:
1, the defect in knife-like backlash insulating material is adopted, water tree is caused fast by water cutter electrode, the water resistant branch of inspection insulating material causes and growth performance, the priming site of water tree can be increased, accelerate the initiation of water tree, efficiency of initiation is high, water tree growth is fast, experimental period is short, can the water tree resistant property of Fast Evaluation insulating material, see table 1, when table 1 gives that insulation thickness is 2mm, electric voltage frequency is 50Hz, voltage effective value is 2kV, cause the growing state of water tree with liquid drugs injection electrode and water cutter electrode:
Table 1:
2, this utility model have simple to operate, test period is short, the advantage of saving resource.
Accompanying drawing explanation
Fig. 1 is the structure drawing of device causing experiment according to embodiment of the present utility model for water tree;
In figure: 1-PP manages; 2-cup/lid; 3-high-voltage connection; 4-sheet specimens; 5-knife-like gap; 6-ground-electrode; 7-high-voltage power supply; 8-sodium-chloride water solution.
Embodiment
To be described one exemplary embodiment of the present utility model by reference to the accompanying drawings hereinafter.For clarity and conciseness, all features of actual embodiment are not described in the description.But, should understand, must make a lot specific to the decision of embodiment in the process of any this practical embodiments of exploitation, to realize the objectives of developer, such as, meet those restrictive conditions relevant to system and business, and these restrictive conditions may change to some extent along with the difference of embodiment.In addition, although will also be appreciated that development is likely very complicated and time-consuming, concerning the those skilled in the art having benefited from the utility model disclosure, this development is only routine task.
At this, also it should be noted is that, in order to avoid the utility model fuzzy because of unnecessary details, illustrate only in the accompanying drawings with according to the closely-related apparatus structure of scheme of the present utility model and/or treatment step, and eliminate other details little with the utility model relation.
Embodiment of the present utility model provides a kind of device causing experiment for water tree, comprise PP pipe 1, cup/lid 2, high-voltage connection 3, sheet specimens 4, water cutter electrode, ground-electrode 6, high-voltage power supply 7, sheet specimens 4 is placed in the lower port place of PP pipe 1, container is made with PP pipe, filling chlorinated sodium water solution 8 in container, cup/lid 2 mounts cover on PP pipe 1, high-voltage connection 3 is introduced by cup/lid 2, the lower end of high-voltage connection 3 is placed in sodium-chloride water solution 8, the upper end of high-voltage connection 3 is connected to high-voltage power supply 7, the upper surface of sheet specimens 4 has cut knife-like gap 5, be full of sodium-chloride water solution 8 in knife-like gap 5 and form water cutter electrode, sheet specimens 4 lower surface is provided with ground-electrode 6, the thickness of sheet specimens is the twice of the distance between the knife edge in knife-like gap and sheet specimens lower surface.
In addition, according to a kind of implementation, the distance H between the knife edge in described knife-like gap 5 and sheet specimens 4 lower surface is 1mm-4mm.
In addition, according to a kind of implementation, the volumetric molar concentration of described sodium-chloride water solution 8 is 1mM-3M.
Known by describing above, above-mentionedly to achieve fast according to the utility model, accurate inspection XLPE insulating material water tree resistant property.
Although the embodiment that the utility model discloses as above, the embodiment that its content just adopts for the ease of understanding the technical solution of the utility model, is not intended to limit the utility model.Technician in any the utility model art; under the prerequisite not departing from the core technology scheme that the utility model discloses; any amendment and change can be made in the form implemented and details; but the protection domain that the utility model limits, the scope that still must limit with appending claims is as the criterion.
Claims (3)
1. one kind is caused the device of experiment for water tree, it is characterized in that: comprise PP pipe (1), cup/lid (2), high-voltage connection (3), sheet specimens (4), water cutter electrode, ground-electrode (6), high-voltage power supply (7), sheet specimens (4) is placed in the lower port place of PP pipe (1), manage (1) with PP and make container, filling chlorinated sodium water solution (8) in container, cup/lid (2) mounts cover on PP pipe (1), high-voltage connection (3) is introduced by cup/lid (2), the lower end of high-voltage connection (3) is placed in sodium-chloride water solution (8), the upper end of high-voltage connection (3) is connected to high-voltage power supply (7), the upper surface of sheet specimens (4) has cut knife-like gap (5), be full of sodium-chloride water solution (8) in knife-like gap (5) and form water cutter electrode, sheet specimens (4) lower surface is provided with ground-electrode (6), the thickness of sheet specimens (4) is the twice of the distance (H) between the knife edge in knife-like gap (5) and sheet specimens (4) lower surface.
2. a kind of device causing experiment for water tree according to claim 1, is characterized in that: the distance (H) between the knife edge of described knife-like gap (5) and sheet specimens (4) lower surface is 1mm-4mm.
3. a kind of device causing experiment for water tree according to claim 1 and 2, is characterized in that: the volumetric molar concentration of described sodium-chloride water solution (8) is 1mM-3M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520420016.8U CN204649597U (en) | 2015-06-17 | 2015-06-17 | A kind of device causing experiment for water tree |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520420016.8U CN204649597U (en) | 2015-06-17 | 2015-06-17 | A kind of device causing experiment for water tree |
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| CN204649597U true CN204649597U (en) | 2015-09-16 |
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| CN201520420016.8U Expired - Fee Related CN204649597U (en) | 2015-06-17 | 2015-06-17 | A kind of device causing experiment for water tree |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817430A (en) * | 2017-12-06 | 2018-03-20 | 广西电网有限责任公司电力科学研究院 | A kind of method that cable local discharge defect is observed by transparent terminal |
| CN112649710A (en) * | 2020-12-17 | 2021-04-13 | 国网河北省电力有限公司电力科学研究院 | Cable water branch cultivation method and device |
-
2015
- 2015-06-17 CN CN201520420016.8U patent/CN204649597U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817430A (en) * | 2017-12-06 | 2018-03-20 | 广西电网有限责任公司电力科学研究院 | A kind of method that cable local discharge defect is observed by transparent terminal |
| CN112649710A (en) * | 2020-12-17 | 2021-04-13 | 国网河北省电力有限公司电力科学研究院 | Cable water branch cultivation method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20160617 |